On Mon, 26 Nov 2007 18:19:24 +0100 Benoit Rouits <[EMAIL PROTECTED]> wrote:
> Le dimanche 25 novembre 2007 à 18:26 +0300, Vladimir Mosgalin a écrit : > > That's the main reason why I asked - I heard that people can hear > > 22khz or about that when they are young, than listening gets worse and > > they don't hear very high frequencies anymore - and since I consider > > myself still young ;), I was kind of disappointed by the fact that I > > can't hear not only 22khz, but even 20khz, and when I discovered that > > I can't hear even 18khz, I was kind if scared - is my hearing going > > down due to headphone usage? Thanks for clarifying this issue. > > Theorically, A 44100 sampled audio CD can reproduce a triangle signal > at 22050 Hz. No, it can't. Draw timing diagrams with different relative phases of the signal and sampling frequencies. Your output will be 22050 Hz 50% duty cycle square wave whose amplitude (and polarity/phase) depend on the above relative phase. --Sergei. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
